Charles Elliott Loughlin (February 2, 1910 – October 31, 1989) was an officer of the United States Navy, where he reached the rank of Rear Admiral. He is best known for his court-martial following the controversial sinking of the Japanese hospital ship Awa Maru. He was the commanding officer of the USS Queenfish (SS-393) during four war patrols. Loughlin earned two Navy Crosses, two Legions of Merit and one Silver Star during his time in the United States Navy.